﻿// Jinx AJAX Framework
// Copyright (C) 2008 Blake Hegerle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.IO;
using System.Net;
using Core;
using Jinx.Communications.Hosting;

namespace Jinx.Communications.Content
{
    using ContentFactory = Func<string, Stream>;

    public class ContentServer : IServer
    {
        private readonly ContentFactory ContentFactory;

        public ContentServer(ContentFactory ContentFactory)
        {
            this.ContentFactory = ContentFactory;
        }

        #region IServer Members

        public void ProcessRequest(HttpListenerContext Context, string RelativePath)
        {
            using (var Res = Context.Response)
            {
                var Stream = ContentFactory(RelativePath);

                if (Stream == null)
                {
                    Res.StatusCode = 404;
                    return;
                }

                Res.ContentType = DetermineContentType(GetExtension(RelativePath));

                Res.StatusCode = 200;

                Stream.CopyTo(Res.OutputStream);
            }
        }

        #endregion

        private static string GetExtension(string RelativePath)
        {
            var Extension = "";

            var Dot = RelativePath.LastIndexOf('.');

            if (Dot >= 0)
                Extension = RelativePath.Substring(Dot);

            return Extension;
        }

        private static string DetermineContentType(string Extension)
        {
            switch (Extension)
            {
                case "js":
                    return "text/javascript";
                case "css":
                    return "text/css";
                default:
                    return "text/plain";
            }
        }
    }
}